From a2166ecfa69c5763ae0a24d13b0d55b85fdd2f43 Mon Sep 17 00:00:00 2001
From: Nicolas Vigier <boklm@torproject.org>
Date: Mon, 10 Apr 2017 16:07:23 +0200
Subject: [PATCH] Bug 21907: Fix runtime error on CentOS 6

In Mozilla bug 1324780, support for building with glib 2.28 (the version
available in CentOS 6) was added. However we are building on Debian
Wheezy which has glib 2.32. We fix that by backing out all glib > 2.28
code paths.
---
 gfx/harfbuzz/src/hb-glib.cc | 41 -------------------------------------
 gfx/harfbuzz/src/hb-glib.h  |  5 -----
 2 files changed, 46 deletions(-)

diff --git a/gfx/harfbuzz/src/hb-glib.cc b/gfx/harfbuzz/src/hb-glib.cc
index 2b91b5b6511c9..0971ca2ed7a64 100644
--- a/gfx/harfbuzz/src/hb-glib.cc
+++ b/gfx/harfbuzz/src/hb-glib.cc
@@ -33,7 +33,6 @@
 #include "hb-unicode-private.hh"
 
 
-#if !GLIB_CHECK_VERSION(2,29,14)
 static const hb_script_t
 glib_script_to_script[] =
 {
@@ -155,14 +154,10 @@ glib_script_to_script[] =
   HB_SCRIPT_SORA_SOMPENG,
   HB_SCRIPT_TAKRI
 };
-#endif
 
 hb_script_t
 hb_glib_script_to_script (GUnicodeScript script)
 {
-#if GLIB_CHECK_VERSION(2,29,14)
-  return (hb_script_t) g_unicode_script_to_iso15924 (script);
-#else
   if (likely ((unsigned int) script < ARRAY_LENGTH (glib_script_to_script)))
     return glib_script_to_script[script];
 
@@ -170,15 +165,11 @@ hb_glib_script_to_script (GUnicodeScript script)
     return HB_SCRIPT_INVALID;
 
   return HB_SCRIPT_UNKNOWN;
-#endif
 }
 
 GUnicodeScript
 hb_glib_script_from_script (hb_script_t script)
 {
-#if GLIB_CHECK_VERSION(2,29,14)
-  return g_unicode_script_from_iso15924 (script);
-#else
   unsigned int count = ARRAY_LENGTH (glib_script_to_script);
   for (unsigned int i = 0; i < count; i++)
     if (glib_script_to_script[i] == script)
@@ -188,7 +179,6 @@ hb_glib_script_from_script (hb_script_t script)
     return G_UNICODE_SCRIPT_INVALID_CODE;
 
   return G_UNICODE_SCRIPT_UNKNOWN;
-#endif
 }
 
 
@@ -243,10 +233,6 @@ hb_glib_unicode_compose (hb_unicode_funcs_t *ufuncs HB_UNUSED,
 			 hb_codepoint_t     *ab,
 			 void               *user_data HB_UNUSED)
 {
-#if GLIB_CHECK_VERSION(2,29,12)
-  return g_unichar_compose (a, b, ab);
-#endif
-
   /* We don't ifdef-out the fallback code such that compiler always
    * sees it and makes sure it's compilable. */
 
@@ -280,10 +266,6 @@ hb_glib_unicode_decompose (hb_unicode_funcs_t *ufuncs HB_UNUSED,
 			   hb_codepoint_t     *b,
 			   void               *user_data HB_UNUSED)
 {
-#if GLIB_CHECK_VERSION(2,29,12)
-  return g_unichar_decompose (ab, a, b);
-#endif
-
   /* We don't ifdef-out the fallback code such that compiler always
    * sees it and makes sure it's compilable. */
 
@@ -339,10 +321,6 @@ hb_glib_unicode_decompose_compatibility (hb_unicode_funcs_t *ufuncs HB_UNUSED,
 					 hb_codepoint_t     *decomposed,
 					 void               *user_data HB_UNUSED)
 {
-#if GLIB_CHECK_VERSION(2,29,12)
-  return g_unichar_fully_decompose (u, true, decomposed, HB_UNICODE_MAX_DECOMPOSITION_LEN);
-#endif
-
   /* If the user doesn't have GLib >= 2.29.12 we have to perform
    * a round trip to UTF-8 and the associated memory management dance. */
   gchar utf8[6];
@@ -381,22 +359,3 @@ hb_glib_get_unicode_funcs (void)
 
   return const_cast<hb_unicode_funcs_t *> (&_hb_glib_unicode_funcs);
 }
-
-#if GLIB_CHECK_VERSION(2,31,10)
-/**
- * hb_glib_blob_create:
- *
- * Since: 0.9.38
- **/
-hb_blob_t *
-hb_glib_blob_create (GBytes *gbytes)
-{
-  gsize size = 0;
-  gconstpointer data = g_bytes_get_data (gbytes, &size);
-  return hb_blob_create ((const char *) data,
-			 size,
-			 HB_MEMORY_MODE_READONLY,
-			 g_bytes_ref (gbytes),
-			 (hb_destroy_func_t) g_bytes_unref);
-}
-#endif
diff --git a/gfx/harfbuzz/src/hb-glib.h b/gfx/harfbuzz/src/hb-glib.h
index 5f04183ba19ff..4adbd7c332cb2 100644
--- a/gfx/harfbuzz/src/hb-glib.h
+++ b/gfx/harfbuzz/src/hb-glib.h
@@ -46,11 +46,6 @@ hb_glib_script_from_script (hb_script_t script);
 HB_EXTERN hb_unicode_funcs_t *
 hb_glib_get_unicode_funcs (void);
 
-#if GLIB_CHECK_VERSION(2,31,10)
-HB_EXTERN hb_blob_t *
-hb_glib_blob_create (GBytes *gbytes);
-#endif
-
 HB_END_DECLS
 
 #endif /* HB_GLIB_H */
-- 
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